???
William MAUND                                ?=========>>   Robert JOHNSTON
+ Esther TUCKER                              ???            Daniel JOHNSTON
    |                                         |             James JOHNSTON
    |    George SUGG + Sarah IVES    _________|_________    Samuel JOHNSTON
    |                |              |                   |
William MAUND + Priscilla SUGG + JOHNSTON          Jacob JOHNSTON + Mary
              | + Jacob ALLEN                                     |
         _____|___________               _________________________|______
        |                 |             |         |  |      |            |
 William MAUND      Esther MAUND + Jonas JOHNSTON |  |    Seley   Owen   |
              ___________________|                |  | JOHNSTON + CRAVEY |
    _________|___________                      Jacob |          |        |
   |     |     |      |  |                  JOHNSTON |    Hugh CRAVEY    |
 William | Elizabeth  | Mary                         |                   |
JOHNSTON |     Maund  | JOHNSTON        Nathan JOHNSTON       Amos JOHNSTON
         |  JOHNSTON  | + RUFFIN              |               + Catherine
         |            |             Jordan JOHNSTON           |
       Selah      Prudence   Peter      ______________________|__________
       JOHNSTON   JOHNSTON + HINES     |            |       |        |   |
                           |        Esther JOHNSTON | Nancy JOHNSTON |   |
                    Richard HINES   + James WILKINS | + Peter EVANS  |   |
                      ______________|__             |        |       |   |
                     |                 |    Mary JOHNSTON   Mary Ann |   |
                  Amos Johnston   Susan D.  + Joel BATTLE      EVANS |   |
                        WILKINS    WILKINS   |                       |   |
                       ______________________|___        Jacob JOHNSTON  |
                      |                          |                       |
           Amos Johnston BATTLE   William Horn BATTLE   Richard W. JOHNSTON
                                                                    + Nancy

At this point I would guess that Priscilla was married to Daniel JOHNSTON.
But the only evidence we have for that is that he was the former owner of
the land she distributed in her will.  But, unless there was another Daniel,
this is unlikely since he probably died before she did, and a Daniel
JOHNSTON appeared in conjunction with Gabriel ALLEN in a 1780 land record.
Other possibilities for the husband of Priscilla were Samuel (mentioned in
1745), Robert (1767), and James JOHNSTON (1767).

                                        --- Scott TRIMBLE, 9 Apr 1995