I believe you have misinformation. 1. There is no record that Jacob Ricker married anybody named Aldmann. There is a record that a Mathias Sommer married Aldmann in 1758, but it has been established this Mathias Sommer is a different individual than the one who went to N.B. 2. There is no record that Jacob Ricker married Christina Nullin in PHL. He "proabably" remarried to her after arriving in N.B. in 1766 when his wife died as did her husband.
I'm not sure your of your source, the current evidence lays out what I've said here.