When the 11 ships of the First Fleet sailed from Portsmouth on 13 May 1787, there was many young people aboard shattered over six of the ships.

Three convict’s children embarked on the First Fleet died on the voyage.  Babies were born alive after sailing of two died before the voyage’s end, with births and deaths recorded in 1788.  Most of the children of Marines left when the regiment sailed on the Gorgon in 1791.

THE CHILDREN
Abel/Tilley, William  (1787 – 1788) – son of convict Mary Abel/Tilley
Abrahams, Esther/Rosanna (1787 – 1837) daughter of convict Esther Abrahams
Bacon, Elizabeth (c 1788 – ?) daughter of marine private Samuel Bacon and his wife Jane
Bagley, Marine (? – ?) daughter of marine corporal Ralph Bagley and his wife Sarah
Baughan/Bingham/Bunham, James/John (1787 – 1788) could be the child of convict parents John Baughan and Mary Cleaver
Bellamy/Downey, Joseph (1788 – 1788) son of seaman Joseph Downey and convict Sarah Bellamy
Bentley/Morton/Moulton, Joshua (1787 – 1790) son of seaman Joseph Bentley and convict Ann Moulton
Bolton/Boulton, Rebecca (1786-1788) – daughter of convict Rebecca Bolton/Boulton
Braund/Bryant/Spence, Charlotte (1787 – 1792) daughter of convict Mary Braund/Bryant, christened as Charlotte Spence
Cabell/Cable/Kable/Holmes, Henry (1785? – 1852) son of convict parents Susannah Holmes and Henry Cabell/Kable
Campbell, James Duncan (c1775? -) a child relation of Captain Campbell
Chapman, Jane ( ? – ? ) and Elizabeth (c 1781 – ?) daughters of corporal of marines Thomas Chapman and his wife Jane
Colethread, James (c1782? – ?) a marine’s child
Clement/Dalton, Frances Hannah (c1788 – 1800)
Davis, Jane (1787 – 1787) son of private marine John Davis and his wife Martha
Dougherty, Daniel (1787 – ) son of private Arthur Dougherty and his wife Judith
Dwan, Edward (1787 – ?) son of marine sergeant Edward Dwan and his wife Jane
Gough/Cox, Joseph (? – ?) son of corporal of marines Thomas Gough and his wife Johanna
Green, William ((c1785 – 1787) son of convict Ann Green
Harmsworth, Ann (c1782 – ?), Harmsworth, John (c1785 – 1860), Harmsworth, Thomas (1787 – 1788) children of private marine Thomas Harmsworth and his wife Alice
Hayward, Elizabeth (c 1773 – 1836) convict child
Hudson, John (c 1774 – ?) convict child
Jones, Jane/Jenny (1778 – 1849) daughter of convict Elizabeth Evans/Jones
Langley/Shirving, Henrietta (1787 – 1828) daughter of convict Jane Langley, christened as Henrietta Shirving
Lawson/Rosson/Rawson, Mary/John (c 1787 – 1787) son or daughter of convict Isabella Lawson/Rosson
McCabe/McCave, Charles (1787) stillborn son of convict Eleanor McCabe
Mason, Thomas (1786-1787) son of Betty (Elizabeth) Mason
Mullens, Mary (1782 – ?) daughter of convict Hannah Mullens
Munday, Edward (c 1783 – 1832) son of marine private John Munday and his wife Ann
Parfett/Parfet, James (1787 – ?) son of marine drummer John Parfett and his wife Sarah
Parkinson/Hughes, Edward (c 1784 -1798) son of convict Jane Parkinson.  First child orphaned on the First Fleet
Prior, John Matthew (1787 – 1788) son of convict Catherine Prior and reputedly convict John Arscott
Pugh/Parker, Ann/Nancy (1786 – 1788) daughter of convict parents Edward Pugh and Elizabeth Parker
Richards, Samuel (1787 – ?) son of marine private Lawrence Richards and his wife Mary
Ross, Alexander John (c 1779 – 1800) son of Major Robert Ross
Russell, Thomas (1787 – ?) son of marine private John Rusell and his wife Elizabeth
Sandlin, Hugh (c 1785 – 1787) son of convict Ann Sadlin/Lines
Scott, Elizabeth (1787 – ?) daughter of marine sergeant John Scott and his wife Jane
Smith, Ann (c 1785 – ?) daughter of convict Ann Smith
Smith, Edward/William (1786? – 1788?) son of convict mother Hannah Smith
Spencer/Spence, Mary (1787 – 1788) daughter of convict Mary Spencer/Spence
Stewart, John (? – ?) son of marine sergeant Peter Stewart and his wife Margaret
Theakston/Yeates, Joseph (c 1787 – ?) believed to be the son of convict Nancy Yeates and a sailor Joseph Theakston
Wright, Elizabeth (1787 – ?) daughter of private marine Matthew Wright and his wife Mary
Wright/Charlicut, Mary Ann (1787 – ?) daughter of marine private Henry wright and his wife Ann
Wright, Elizabeth (1787 – ) daughter of private marine Matthew Wright and his wife Mary
Young, John (? – ?), Young, Thomas (? – ?) sons of marine sergeant Thomas Young and his wife Elizabeth
son of marine sergeant Thomas Young and his wife Elizabeth
Youngson, George (c 1774 – ?) convict, was sentenced with his convict sister Elizabeth Youngson (c1772 – 1854?).  Both arrived on the Prince of Wales

References:
Gillen, Mollie, The Founders of Australia, A Biographical Dictionary of the First Fleet
Holden, Robert, Orphans of History, The Forgotten Children of the First Fleet