So did both Ira D. Sankey and Fanny Crosby use Rian A. Dykes (an anagram of Sankey's name) as pseudonym, as is indicated by these entries?:
Yes, it is confusing. According to "An Evening of Song and Story with Fanny J. Crosby" by S. Trevina Jackson (published by Biglow & Main, 1915) Rian A. Dykes was a pseudonym used by Crosby. We have two hymns, apparently by Crosby, which use other known pseudonyms of Crosby - "God is Love, his word proclaims it" uses "J. Sterling" in one hymnal and "Rian A. Dykes" in others and "I must walk through the valley and the shadow" is attributed to "Alice Monteith" in one hymnal and to "Rian A. Dykes" in others. On the other hand, as you pointed out, "Rian A. Dykes" is an anagram of Sankey's name. The "Catalog of Copyright Entries" of 1922 notes that "Rian A. Dykes" is a pseudonym for "Ira D. Sankey" used on the tune for "My heart is resting" (words by Anna L. Waring). The Cyber Hymnal attributes some Dykes pseudonyms to Crosby and some to Sankey.
When Dykes was substituted for Crosby pseudonyms, maybe it was like attributing "Away in a Manger" to Martin Luther.
Very interesting. Thanks for the info. :)