There is inkling Anne married a McNamara. Cant find marriage for John and Mary devout Catholics. A Father Crabb gave Martin a reference in l863 dont know what parish he belonged to. Have all baptism dates for all children but no idea of church. Dont know what happened to John or Mary and where they are buried. There is a John Markham who died in Tulla aged 80, would that fit in Tulla with Quin. There is a thought that there were 5 brothers initially from Kilrush who scattered across County clare in the l820s. There is some connnection (family folklore with Anne Madden who died in l869 marrying a Fecken or Martin Markham and having 5 boys. It is thought that the Derringhuia Markhams may have been one of the brothers. They dont think so.
Hope someone can assist. Much appreciated.