I spent about 2 hours reading through land grants for the area. There are several attributed to John Moseely with various spellings but none in 1656 that I could find in MA.
I found records from the First Church of Dorchester https://archive.org/stream/recordsoffirstch00firs/recordsoffirstch00firs_djvu.txt
At a meeting of the Church In Dorchester Nov. 26"', 1734.
Voted
5 that John Moselev & his wife be Dismissed &. recom-
mended according to v r Desire to the Chh In Newton where
they have removed.
list of Moseley various spellings in the record:
Maudesley, Maudsley, Maudsly, Moseley:
Abigail, 235, 236; Clark, 234. »42 ; Eb:
25; Ebenezer, 41, 152, 159, 163,204,229,
330, 232, 234, 236, 238, 239, 240, 241.243,
243, 245. 250; Elizabeth, 39, 174, 201, 230,
332, 340, 242, 243; father, 25, 156; Han-
nah, 232, 236, 242; Increase, 194,206,323,
324; John, 5, 14, 151, 167, 172, 206,232,
234. 235, 242, 243; Joseph, 41, 170, 243,
358; Margaret, 235; Mary, 22, 33, 117, 192,
196, 206, 234, 242. Mr., 164; Nathaniel,
175, 210, 238; Samuel, 234, 231, 233, 246;
Sarah, 223, 232, 234, 242, 245; Silence,
231, 239; Susan, 233; Susanna, 224; Re-
becca, 232, 238; Thankful, 229; Thomas,
«. 32. 33. 39. 40, 102, 128, 131, 148, 192,
194, 196, 198, 201, 202, 204, 206, 210, 221,
323, 224, 229, 231, 232, 233, 235, 236, 238,
243. 245. 248, 250, 252, 253; Unite, 202,
238; wid., 253.