Pittstopp on Family Tree Circles

I am looking for these 2 brothers, both born in 1772 in England to a Mary Matcham and Robert Pitt. They could possibly be twins. They both went to america apparently before Mary and 5 of her other children travelled to Australia in 1801, after her husband Robert died.

I can not find any information about these 2 brothers, other than they went to America.