The following entry is from the Dictionary of Newfoundland English and includes reference to "merrybegot":
merry a OED ~ a B adv b ~ begot (1785, 1890), EDD (2) (a); OED dancer n 5, EDD ~ a 1 (6) ~ dancers, DC (1946). Comb merry-begot, ~ me-got: bastard; MOSS CHILD. 1924 ENGLAND 183 'The merry-me-got!' exclaimed the Cap'n, wrathfully. To call a man a merry-me-got seriously reflects on the legitimacy of his entrance into this sorry world. T 222-66 This child is not simply an illegitimate child, but a 'moss child' or a 'moonlight child' or a child that is 'merry begot.' 1968 Nfld Qtly Christmas, pp. 5-6 They often lived together without benefit of clergy and children born out of wedlock were called by the delightful name of 'merrybegots.'
merry dancers, dancers: northern lights, aurora borealis (1937 DEVINE 33). C 65-2 The northern dancers or merry dancers are really going it tonight. We're going to have a nice day tomorrow. C 66-18 Extra brilliant light of the northern lights is a sign of good weather. They are called dancers in Bonavista. 1981 HUSSEY 62 The merry dancers were northern lights but they looked a bit different and were a bit more lively ... always in motion and continually dancing,
Another use of the word Merrybegot: a collection of poems by Mary Dalton, the audio edition of which was narrated by Anita Best with Patrick Boyle on trumpet and flugelhorn; published by Rattling Books in 2005.
