  In this paper we investigate the Meijer's $G$ function $G^{p,1}_{p+1,p+1}$
which for certain parameter values represents the Riemann-Liouville fractional
integral of Meijer-N{\o}rlund function $G^{p,0}_{p,p}$. Our results for
$G^{p,1}_{p+1,p+1}$ include: a regularization formula for overlapping poles, a
connection formula with the Meijer-N{\o}rlund function, asymptotic formulas
around the origin and unity, formulas for the moments, a hypergeometric
transform and a sign stabilization theorem for growing parameters. We further
employ the properties of $G^{p,1}_{p+1,p+1}$ to calculate the Hadamard finite
part of an integral containing the Meijer-N{\o}rlund function that is singular
at unity. In the ultimate section, we define an alternative regularization for
such integral better suited for representing the Bessel type generalized
hypergeometric function ${}_{p-1}F_{p}$. A particular case of this
regularization is then used to identify some new facts about the positivity and
reality of the zeros of this function.
