I'm not sure if they were Loyalists or not, but the timing is probably right and Myers' do appear in Esther Clark Wright's book "The Loyalists of New Brunswick."
On p. 308 in the Appendix
Myer(s), Abraham, of R.I., member of 2 New Jersey Volunteers?, settled Gagetown, N.B
- Charles, 1st DeLancey's Brigade, British Legion (Tarleton's) 8
- David, of Mass, settled St. Andrews, d. 1786
- Edward, Loyal American Regiment, British Legion (Tarleton's) 3
- Jacob, Engineering Dept., Lot 659 in Parrtown (Saint John)
- John, New Jersey, Commiasary-General's Dept., RL (not sure what this one is)
- Rachel, settled Queens Co., NB, removed to Kings Co., NB
- Reuben, yeoman, 85, King's American Regt, Lot 142 in Carlton
- Samuel, Lot 1220 in Parrtown (Saint John), removed to Queens Co., NB
- William, yeoman, 85, 1st New Jersey Volunteers?, Lot 1305 in Parrtown (Saint John)
I have found the marriage for Jacob Myers and Angelique at Christ Church Montreal. It is listed under 1789 and is as follows:
Jacob Myers and Angelica Taillon were married by publication the 24th Novr."
and interestingly enough Abraham Myers was a witness to his second marriage to Marie Gauvreaux.