Gadget,
What I have is this as birth dates ......John Platt ca 1795
Thomas ca 1799-1801
Edward ca 1801-1802
Richard ca 1810-1811
John, Edward, and Thomas appear emigrated to America in 1829
John and Thomas appear on the census in Pennsylvania in 1830
John, Thomas, Edward, and Richard appear on the census in Pennsylvania in 1840
Unfortunately these census records only list heads of families and number of females or males living in the houses.
From the ship register.......John is married to Hannah, Edward is single, Thomas is married to Ann.....
John has the following children: Sarah 11....born ca 1818, Ann who may be 6 or 4 (bad picture of the list), and Dianna who is 1 born ca 1828.
With Thomas is his wife Ann born ca 1805.......Children are Jonah 3 born ca 1826, and Hannah 1 born ca 1828.
Richard is not listed on the ship register but from his tomstone it says he was 49 years old at death in 1860...so probably born 1810/1811. Addiitonally his stone says he was born in Denbighshire North Wales.
One last thing...Thomas is listed on the 1850 census in the area where all of these people lived in 1840....There his children and wife are listed....Ann, Jonas, 24. Edward. all of these were listed as born in Wales
.