The luminosity of supernovae of type Ia from tip of the red-giant branch distances and the value of H0

Distances from the tip of the red-giant branch (TRGB) in the halo population of galaxies - calibrated through RR Lyr stars as well as tied to HIPPARCOS parallaxes and further supported by stellar models - are used to determine the luminosity of six nearby type Ia supernovae (SN 2011fe, 2007sr, 1998bu, 1989B, 1972E, and 1937C). The result is < M-V(corr)> = -19.41 +/- 0.05. If this value is applied to 62 SNe Ia with 3000 < v < 20, 000 km s(-1) a large-scale value of the Hubble constant follows of H-0 = 64.0 +/- 1.6 +/- 2.0. The SN HST Project gave H-0 = 62.3 +/- 1.3 +/- 5.0 from ten Cepheid-calibrated SNe Ia. The near agreement of young Population I (Cepheids) and old, metal-poor Population II (TRGB) distance indicators is satisfactory. The combined weighted result is H-0 = 63.7 +/- 2.3 (i.e. +/- 3.6%). The value will be helpful to constrain models of the early Universe.